Heat transferring device



March 20, 1934. M. YOUNG HEAT TRANSFERRING DEVICE` Filed Nov. 25, 1932 Patented Mar. 20, 1934 UNITED STATES PATENT OFFICE HEAT TRANSFERRING DEVICE Leon M. Young, Racine, Wis., assignor to Young Radiator Company, Racine, Wis., a corporation of Wisconsin My invention relates to radiators wherein tubes are used for the passage of the heating or cooling fluid or gas, and wherein plates or fins are assembled on the tubes and closely spaced for the purpose of increasing the radiating surface, means also being provided in combination with the ns for directing the air current toward the tubes and thereby to more eiciently transfer the heat from the tubes and ns to the circulating air.

My invention has for an object air directing means, or deectors, which are integral with the fins and act as spacers between flns to hold them into spaced relation before and after the fins have 5 been made fast to the tubes by bonding.

A further object of my invention is to provide means in the form of depressions suitably positioned in the fins. and adapted to register with the depressions on adjacent ns, thereby to increase the surface, strengthen or stilfen the fins and divertthe air current from fin to fin, or cause the air to impinge adjacent surfaces alternately and more closely Wipe the fins and tubes, thus to more effectively radiate heat from the fins and tubes to the air.

My improved air directing means has as a general object the production of a heat transferring device, which is strong, durable and efficient in operation.

To these and other useful ends this invention consists in matter hereinafter set forth and claimed and shown in the accompanying drawingin which:

Fig. 1 is a fractional front elevation of a radiator illustrating an application of my invention.

Fig. 2 is a fractional side elevation of a radiator as shown in Fig. 1.

Fig. 3 is a fractional sectional view taken substantially on line 3 of Fig. 2.

Fig. 4 is a pictorial drawing of a preferred form of my air directing means.

Fig. 5 is a fractional view of a modified form of my invention. 5 Fig. 6 is an enlarged fractional sectional view taken on line 6 of Fig. 3.

Fig. '7 is a fractional top view of a modification wherein the tubes are flattened so that the sides are straight and ends are curved.

Referring specifically to Figs. 1-6 inclusive, the numeral 15 designates the header of a conventional radiator, 16 designates the tubes through which the heating or cooling liquid or gas is circulated. In order to increase the ra- M diating capacity of the tubes 16, I provide the customary ns 17 through which the tubes extend. These fins are closely spaced on the tubes and are provided with integral flanges 18 which closely embrace the tubes, thus forming a suitable surface by means of which the fins are soldered or bonded to the tubes 16.

The preferred form of my air deflector and spacer as clearly illustrated in Fig. 4, consists of two preferably triangular pieces 19 which are cut from the fin 17 as indicated, and bent transverse to the fin at their base, thus leaving triangular apertures as at 20; the deflectors 19 are positioned and closely spaced apart in parallel relation as indicated.

The apexes of these deectors 19 are bent or folded one over the other, as clearly indicated in Fig. 4, thus forming an air channel as at 21, and also provide a substantial spacer for the ns. The air deflectors are positioned whereby the channels 21 are preferably in front and rear of each tube in the direction of air ow as indicated by arrows in Figs. 3 and 5. Thus the air will be directed toward and caused to violently impinge the tubes 16.

Radiator fins are necessarily very thin, fragile and easily bent. In order to stiffen the fins, increase their surface and create air turbulence and thus increase the eflciency of the fins, I form or press depressions 22 in the fins 17. These depressions are adapted to register with the raises formed by the depressions in the adjacent iin as indicated in Fig. 6. These depressions may be variously shaped and positioned depending upon the position and shape of the tubes and air deflectors. They are indicated as most advantageously positioned, with the arrangement of tubes and deectors as shown in Fig. 3. In this figure I illustrate three rows of tubes in staggered relation, the rows arranged transverse to the radiator. n

In Fig. 5 I show a single row of tubes and a width of fin best suited therefor. It will be seen that the depressions are differently positioned from that shown in Fig. 3. It will, therefore, be seen that the tubes, deflectors and depressions may be variously positioned. I have contemplated the use of other than round tubes, some shapes of which would require a different arrangement of depressions and deflectors from that shown.

A modification of my device is illustrated in Fig. 7, wherein the fins 28 are adapted to be assembled on a single row of tubes 29, having attened sides and rounded ends. The location of the deiiector spaces 30 relative to the tubes 29 is very similar to that shown in the other gures,

- except that they are positioned between the tubes in direction of air ow.

Thus a combined defiector and spacer and means for stiiening the fins and creating turbulence is provided which will cause the air to impinge adjacent surfaces of the fins alternately and more directly impinge the tubes.

Having thus shown and described my invention, .what I claim as new and desire to secure by Letters Patent is:

l. A heat transferring device, comprising suitable headers and a plurality of circulating tubes therebetween, a plurality of closely spaced ns through which said tubes extend, a plurality of pairs of air directing means cut from and constituting an integral part of said finsbent at right angles thereto the ends of which are folded one over the other thereby forming an air directing channel and a rest for the adjacent n to hold said iins in spaced relation and direct the air current in its course between said ns.

2. A heat transferring device, comprising suitable headers and a plurality of circulating tubes therebetween, a plurality of closely spaced ns through which said tubes extend, a plurality of pairs of air directing means cut from and constituting an integral part of said fins bent at right angles thereto the ends of which are folded one over the other thereby forming an air directing channel and a rest for the adjacent iin to hold said fins in spaced relation and positioned thereby to direct the air current toward said tubes.

3. A heat transferring device, comprising suitable headers and a plurality of circulating tubes therebetween, a plurality of closely spaced fins through which said tubes extend, a plurality of suitably positioned pairs of triangle shaped pieces cut from said ns and bent at right angles thereto the apexes of which are folded one over the other thereby to form a closed air channel and a support for the adjacent n to hold said ns in spaced relation and direct the air current in its course between said iins.

4. A heat transferring device, comprising suitable headers anda plurality of circulating tubes therebetween, a plurality of closely spaced fins through which said tubes extend, a plurality of suitably positioned pairs of triangle shaped pieces cut from said ns and bent at right angles thereto the apexes of which are folded one over the other thereby to form a closed air channel and a support for the adjacent iin to hold said ns in spaced relation and positioned thereby to direct the air current toward said tubes.

LEON M. YOUNG. 

